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The ZOOM® IEF Fractionator System (Figure 1) consists of the following components:

• ZOOM® IEF Fractionator is built for safety, reliability, and durability. It includes easy-to-assemble sample chambers, in-built buffer chambers, buffer trough, removable electrode assembly, and safety lid.• ZOOM® Disks are pre-cast polyacrylamide gels that eliminate the need for manual preparation and minimize any chance of cross contamination. These immobilized buffered disks are pre-labeled, disposable, and designed for single use, ensuring consistent and reproducible fractionation. They resolve samples into as many as 7 fractions (using 8 disks of specific pH) to six fractions (using six disks of specific pH) from pH 3-12. Simply place each disk between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range.• ZOOM® Reagents are proteomic grade reagents, including ZOOM® 2D Protein Solubilizers urea, thiourea, CHAPS, and ampholytes, that ensure optimal conditions for sample preparation.• Basic Protein Kit which includes ZOOM® Discs and ZOOM Strips for IEF of basic proteins, focusing buffers, and solubilizer kits.

Sample Chamber and Fractionator Unit Set-up ProcedureFigures 4-6 illustrate assembly of the sample chambers and fractionator unit. The sample chamber and components fit together easily and offer a leak-proof seal. Simply place disks between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range. For example, if you want to fractionate proteins between pH 4.6 and 5.4, flank a sample chamber with a ZOOM (r) Disk of pH 4.6 and one of pH 5.4.

Downstream Processing by 2D Gel ElectrophoresisFollowing fractionation, the separated samples can be subjected to further analysis using narrow or broad range ZOOM® Strips on the ZOOM® IPGRunner™ System. Follow with second dimension analysis using neutral pH NuPAGE® ZOOM® Gels.